free medical dictionary spell checker

A stand-alone multi-lingual spell checker for any Windows application.

MSDN article "Creating a Custom Spell-Checker with Word 2003 and Visual Basic

Freeware Spell Checker for windows clipboard!

Free english spell checker for windows installs in seconds

Free spell checker for Internet Explorer installs in seconds

a searchable glossary of medical terms from almost all medical specialties

A powerful and handy toolbar for IE with form filler and spell checker